Major Flood
20 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
15 ft
Minor Flood
12 ft
Action Stage
11 ft
What Floods at Each Level
12 ft
The road 2 miles west and 1 mile south of the gauge floods.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| May 31, 1919 | 26 ft | 29,000 cfs |
| Apr 7, 2001 | 15.93 ft | 9,930 cfs |
| Mar 12, 2007 | 15.08 ft | 9,060 cfs |
About This Gauge
Get Flood Alerts for Whetstone River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Whetstone River above Big Stone City?
The Whetstone River above Big Stone City gauge is maintained by USGS (site 05291000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Whetstone River above Big Stone City?
The NWS-defined flood stage for Whetstone River above Big Stone City is 12 feet. Action stage begins at 11 feet. Moderate flooding starts at 15 feet, and major flooding at 20 feet.
How do I get alerts when Whetstone River rises?
Download StormCast free on Google Play, go to River Gauges, and add Whetstone River above Big Stone City to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Whetstone River above Big Stone City gauge located?
The gauge is located in Grant County, South Dakota at coordinates 45.2834°N, 96.5104°W. USGS site number: 05291000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.